491407 has 4 divisors (see below), whose sum is σ = 561616. Its totient is φ = 421200.

The previous prime is 491377. The next prime is 491417. The reversal of 491407 is 704194.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 704194 = 2 ⋅352097.

It is a cyclic number.

It is not a de Polignac number, because 491407 - 2⁷ = 491279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491417) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35094 + ... + 35107.

It is an arithmetic number, because the mean of its divisors is an integer number (140404).

2⁴⁹¹⁴⁰⁷ is an apocalyptic number.

491407 is a deficient number, since it is larger than the sum of its proper divisors (70209).

491407 is an equidigital number, since it uses as much as digits as its factorization.

491407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70208.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 491407 is about 701.0042795875. The cubic root of 491407 is about 78.9127381294.

It can be divided in two parts, 491 and 407, that added together give a palindrome (898).

The spelling of 491407 in words is "four hundred ninety-one thousand, four hundred seven".